import numpy as np

# create a row vector
vectot_row = np.array([1, 2, 3])
print(vectot_row)
# create a column vector
vector_column = np.array([[1], [2], [3]])
print(vector_column)
# create a matrix
matrix = [[1, 2], [1, 2], [1, 2]]
print(matrix)
